The endorsement will be presented at noon at McCloone’s Boat House in West Orange, two sources with knowledge of the announcement said today. The sources requested anonymity because they were not authorized to speak publicly about the endorsement until after the formal announcement was made.

Essex County Sheriff Armando Fontoura will also back Christie at the event, according to the sources, as will several Democratic mayors and black ministers.

Christie has for months been highlighting endorsements from Democratic elected officials throughout his campaign. But by far the highest profile have occurred this week. Union City Mayor and state Sen. Brian Stack is expected to endorse Christie today, according to reports.

Neither endorsement is a surprise. Stack has been a crucial Democratic vote for Christie's legislative agenda and once called him the best governor the state has ever had. DiVincenzo often talks about his friendship with Christie, frequently meets with him privately and often publicly sings his praises.